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                            <li><a class="aon1 canClick" href="javascript:;" data="help/htmls/cases/case-1.html">描述性统计</a>
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                    <h2>描述性统计</h2>
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                        <h2 class="blue">描述性统计</h2>
					    <p>“描述性统计”过程为单个表中的若干变量显示单变量摘要统计量，如均值等。比如研究者想了解2014年，北上广城镇居民可支配收入的平均水平。</p>
					    <h2 class="blue">数据</h2>
					    <p>搜索城镇居民可支配收入省级数据，地区选取地区选择北京市上海市及广东省，时间选择2014年。</p>
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					    <h2 class="blue">操作</h2>
					    <p>选定数据框</p> <p>右键单击 > 描述性统计</p>
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					    <h2 class="blue">描述性分析结果输出</h2>
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					    <p>由均值可知，北上广城镇居民家庭平均可支配收入为43173元，高于全国平均水平28843元，高出近50%。</p>
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